A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-05 19:31:57 -04:00
Code Issues Projects Releases Packages Wiki Activity

drm/amd/pm: Prevent division by zero

Browse source 
[ Upstream commit 4e3d9508c056d7e0a56b58d5c81253e2a0d22b6c ]

The user can set any speed value.
If speed is greater than UINT_MAX/8, division by zero is possible.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 031db09017 ("drm/amd/powerplay/vega20: enable fan RPM and pwm settings V2")
Signed-off-by: Denis Arefev <arefev@swemel.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Denis Arefev 2025-03-21 13:52:33 +03:00 • committed by Greg Kroah-Hartman
commit 6b9f9b998b
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/gpu/drm/amd/powerplay/hwmgr/vega20_thermal.c
View file

@ -189,7 +189,7 @@ int vega20_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed)
uint32_t tach_period, crystal_clock_freq;
int result = 0;
if (!speed)
if (!speed || speed > UINT_MAX/8)
return -EINVAL;
if (PP_CAP(PHM_PlatformCaps_MicrocodeFanControl)) {